FZHW50 PHFO 151459 CWFHFO Coastal Waters Forecast National Weather Service Honolulu HI 459 AM HST Sat Aug 15 2026 Hawaiian coastal waters within 40 nautical miles including the Hawaiian Islands Humpback Whale National Marine Sanctuary. 459 AM HST Sat Aug 15 2026 .Synopsis for Hawaiian coastal waters... Tropical Storm Lala is located about 95 nm southeast of South Point, moving west-northwest at 11 knots. Northeast winds associated with Tropical Storm Lala will strengthen today. Hurricane conditions are expected around the Big Island with Tropical Storm conditions anticipated elsewhere. Easterly trades return starting Tuesday.
Kauai Northwest Waters- 459 AM HST Sat Aug 15 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON... ...TROPICAL STORM WARNING IN EFFECT...
TODAY East northeast winds 20 to 25 knots. Seas 7 to 9 feet. Wave Detail: East 8 feet at 10 seconds and south southwest 4 feet at 13 seconds. Isolated showers this morning, then scattered showers this afternoon.
TONIGHT Tropical storm conditions possible. East northeast winds 20 to 25 knots. Gusts up to 35 knots after midnight. Seas 8 to 10 feet, building to 9 to 12 feet after midnight. Wave Detail: East southeast 10 feet at 10 seconds and south southwest 3 feet at 12 seconds. Scattered showers in the evening, then heavy showers likely after midnight.
SUNDAY Tropical storm conditions expected. East northeast winds 25 to 35 knots. Seas 11 to 15 feet, building to 14 to 17 feet in the afternoon. Wave Detail: East 16 feet at 9 seconds and south 3 feet at 13 seconds. Heavy showers likely with a slight chance of thunderstorms.
SUNDAY NIGHT East winds 25 to 30 knots, easing to 20 to 25 knots after midnight. Seas 10 to 14 feet, subsiding to 6 to 9 feet after midnight. Wave Detail: East 10 feet at 8 seconds and south 3 feet at 13 seconds. Numerous heavy showers.
MONDAY East winds to 20 knots. Seas 6 to 9 feet, subsiding to 5 to 7 feet in the afternoon. Wave Detail: East 7 feet at 7 seconds and south southwest 3 feet at 14 seconds. Scattered showers.
MONDAY NIGHT East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds and south southwest 3 feet at 13 seconds. Scattered showers, mainly in the evening.
TUESDAY East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Isolated showers, then scattered showers after midnight.
WEDNESDAY East winds to 15 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 6 seconds. Isolated showers through the night. Scattered showers through the day. Winds and seas higher in and near tstms.
Kauai Windward Waters- 459 AM HST Sat Aug 15 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON... ...TROPICAL STORM WARNING IN EFFECT...
TODAY East northeast winds to 20 knots. Seas 9 to 11 feet. Wave Detail: East southeast 9 feet at 10 seconds and south 4 feet at 13 seconds. Isolated showers this morning, then scattered showers this afternoon.
TONIGHT Tropical storm conditions expected. East northeast winds 20 to 25 knots, rising to 25 to 35 knots after midnight. Seas 10 to 12 feet, building to 12 to 16 feet after midnight. Wave Detail: Southeast 14 feet at 11 seconds, east 5 feet at 8 seconds and south 4 feet at 13 seconds. Heavy showers.
SUNDAY Tropical storm conditions expected. East northeast winds 30 to 35 knots, veering to east 25 to 30 knots in the afternoon. Seas 15 to 19 feet, subsiding to 13 to 17 feet in the afternoon. Wave Detail: Southeast 17 feet at 10 seconds, east 4 feet at 8 seconds and south 4 feet at 13 seconds. Heavy showers with a slight chance of thunderstorms.
SUNDAY NIGHT East winds 20 to 25 knots. Seas 9 to 10 feet, subsiding to 7 to 9 feet after midnight. Wave Detail: East 8 feet at 8 seconds and south 4 feet at 15 seconds. Numerous heavy showers.
MONDAY East winds to 20 knots. Seas 7 to 8 feet, subsiding to 5 to 6 feet in the afternoon. Wave Detail: East 7 feet at 6 seconds and south 4 feet at 14 seconds. Scattered showers.
MONDAY NIGHT East winds to 15 knots. Seas 5 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds and south 3 feet at 13 seconds. Isolated showers.
TUESDAY East winds to 15 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds. Isolated showers. Scattered showers after midnight.
WEDNESDAY East winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Scattered showers. Winds and seas higher in and near tstms.
Kauai Leeward Waters- 459 AM HST Sat Aug 15 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON... ...TROPICAL STORM WARNING IN EFFECT...
TODAY Northeast winds 20 to 25 knots. Seas 7 to 10 feet. Wave Detail: East 8 feet at 9 seconds and south 4 feet at 13 seconds. Isolated showers this afternoon.
TONIGHT Tropical storm conditions expected. Northeast winds 20 to 25 knots, rising to 25 to 35 knots after midnight. Seas 9 to 13 feet, building to 12 to 16 feet after midnight. Wave Detail: East southeast 15 feet at 12 seconds and south 4 feet at 12 seconds. Scattered showers in the evening, then heavy showers likely after midnight.
SUNDAY Tropical storm conditions expected. East northeast winds 35 to 45 knots. Seas 16 to 21 feet, building to 19 to 24 feet in the afternoon. Wave Detail: East southeast 24 feet at 11 seconds and south 4 feet at 13 seconds. Heavy showers with a slight chance of thunderstorms.
SUNDAY NIGHT Tropical storm conditions possible. East southeast winds 25 to 35 knots. Gusts up to 50 knots. Seas 12 to 17 feet, subsiding to 7 to 10 feet after midnight. Wave Detail: Southeast 17 feet at 8 seconds and south 4 feet at 15 seconds. Occasional heavy showers.
MONDAY East southeast winds 20 to 25 knots, easing to 15 to 20 knots in the afternoon. Seas 7 to 10 feet, subsiding to 6 to 7 feet in the afternoon. Wave Detail: East 8 feet at 6 seconds and south 4 feet at 14 seconds. Numerous showers.
MONDAY NIGHT East winds 15 to 20 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 6 seconds and south 4 feet at 13 seconds. Scattered showers.
TUESDAY East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East southeast 5 feet at 6 seconds. Scattered showers in the morning. Isolated showers.
WEDNESDAY East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. Isolated showers. Scattered showers after midnight. Winds and seas higher in and near tstms.
Kauai Channel- 459 AM HST Sat Aug 15 2026
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE THIS AFTERNOON... ...TROPICAL STORM WARNING IN EFFECT...
TODAY Northeast winds 20 to 25 knots. Seas 8 to 10 feet. Wave Detail: East 9 feet at 9 seconds and south 4 feet at 13 seconds. Scattered showers this afternoon.
TONIGHT Tropical storm conditions expected. Northeast winds 25 to 30 knots, rising to 30 to 40 knots after midnight. Seas 10 to 13 feet, building to 14 to 19 feet after midnight. Wave Detail: Southeast 19 feet at 12 seconds, south 4 feet at 13 seconds and east 3 feet at 8 seconds. Heavy showers.
SUNDAY Tropical storm conditions expected. East winds 30 to 40 knots. Seas 19 to 23 feet, subsiding to 14 to 19 feet in the afternoon. Wave Detail: Southeast 22 feet at 11 seconds, south 4 feet at 13 seconds and east 3 feet at 8 seconds. Heavy showers with a slight chance of thunderstorms.
SUNDAY NIGHT East southeast winds 20 to 25 knots, easing to 15 to 20 knots after midnight. Seas 6 to 9 feet. Wave Detail: East 8 feet at 8 seconds and south 4 feet at 15 seconds. Numerous heavy showers.
MONDAY East winds 15 to 20 knots. Seas 6 to 7 feet. Wave Detail: East northeast 6 feet at 6 seconds and south 4 feet at 14 seconds. Scattered showers.
MONDAY NIGHT East winds 15 to 20 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 5 seconds and south 4 feet at 13 seconds. Scattered showers, mainly in the evening.
TUESDAY East northeast winds to 15 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 5 seconds. Isolated showers.
WEDNESDAY East northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East northeast 4 feet at 5 seconds. Isolated showers, then scattered showers after midnight. Winds and seas higher in and near tstms.
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